All the ways Elon Musk's companies are already intertwined, from a Tesla 'collab' with SpaceX to Grok in vehicles

Elon Musk's companies have been swapping IP and cash. He argues it makes his firms less prone to geopolitical risks.

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• The five companies led by Elon Musk have increasingly become intertwined, even before merger chatter.
• The firms have at various time shared employees and purchased batteries, software, and vehicles from each other.
• SpaceX is expected to contribute to the upcoming Roadster, for example, and xAI's Grok is in Teslas and Optimus demo bots.